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Pinpoint Test Ax : DTC U0121:00: Notes

Diagnostic Overview 

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.

Normal Operation and Fault Conditions 

IPC DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
U0121:00 Lost Communication With Anti-Lock Brake System (ABS) Module: No Sub-Type Information Sets in the IPC if data messages received from the ABS module over the HS-CAN are missing for 5 seconds or more.

Possible Sources 

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